// The MIT License (MIT)
// 
// Copyright (c) 2015-2025 Rasmus Mikkelsen
// https://github.com/eventflow/EventFlow
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

using System;
using System.Collections;
using System.Collections.Concurrent;
using System.Collections.Generic;
using EventFlow.Extensions;

namespace EventFlow.EventStores
{
    public class EventUpgradeContext : IEventUpgradeContext
    {
        protected ConcurrentDictionary<Type, IEnumerable> EventUpgrades { get; } = new ConcurrentDictionary<Type, IEnumerable>();

        public virtual bool TryGetUpgraders(Type aggregateType, out IReadOnlyCollection<IEventUpgrader> upgraders)
        {
            if (!EventUpgrades.TryGetValue(aggregateType, out var u))
            {
                upgraders = null;
                return false;
            }

            upgraders = (IReadOnlyCollection<IEventUpgrader>)u;
            return true;
        }

        public virtual void AddUpgraders(
            Type aggregateType,
            IReadOnlyCollection<IEventUpgrader> upgraders)
        {
            if (!EventUpgrades.TryAdd(aggregateType, upgraders))
            {
                throw new ArgumentOutOfRangeException(
                    nameof(aggregateType),
                    $"Upgraders for {aggregateType.PrettyPrint()} already added");
            }
        }
    }
}